Re: [PATCH] arm64: dts: imx93-9x9-qsb: Add tianma,tm050rdh03 panel

[Liu Ying <victor.liu@nxp.com>]

On Wed, Apr 08, 2026 at 04:28:40AM -0400, Frank Li wrote:
> On Wed, Apr 08, 2026 at 04:08:24PM +0800, Liu Ying wrote:
>> On Wed, Apr 08, 2026 at 03:58:59AM -0400, Frank Li wrote:
>>> On Wed, Apr 08, 2026 at 02:02:54PM +0800, Liu Ying wrote:
>>>> Hi Frank,
>>>>
>>>> On Tue, Apr 07, 2026 at 05:55:29AM -0400, Frank Li wrote:
>>>>> On Tue, Apr 07, 2026 at 05:15:31PM +0800, Liu Ying wrote:
>>>>>> Support tianma,tm050rdh03 DPI panel on i.MX93 9x9 QSB.
>>>>>>
>>>>>> The panel connects with the QSB board through an adapter board[1]
>>>>>> designed by NXP.
>>>>>>
>>>>>> Link: https://www.nxp.com/design/design-center/development-boards-and-designs/parallel-lcd-display:TM050RDH03-41 [1]
>>>>>> Signed-off-by: Liu Ying <victor.liu@nxp.com>
>>>>>> ---
>>>>>>  arch/arm64/boot/dts/freescale/Makefile             |   2 +
>>>>>>  .../imx93-9x9-qsb-ontat-kd50g21-40nt-a1.dtsi       | 110 +++++++++++++++++++++
>>>>>>  .../imx93-9x9-qsb-ontat-kd50g21-40nt-a1.dtso       | 106 +-------------------
>>>>>
>>>>> Can you add some description about raname in commit message?
>>>>
>>>> I'll add some description about the file copy in commit message.
>>>>
>>>>> Use -C option to create patch.
>>>>
>>>> Will do.
>>>>
>>>>>
>>>>> ...
>>>>>> diff --git a/arch/arm64/boot/dts/freescale/imx93-9x9-qsb-tianma-tm050rdh03.dtso b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb-tianma-tm050rdh03.dtso
>>>>>> new file mode 100644
>>>>>> index 000000000000..c233797ec28c
>>>>>> --- /dev/null
>>>>>> +++ b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb-tianma-tm050rdh03.dtso
>>>>>> @@ -0,0 +1,14 @@
>>>>>> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>>>>>> +/*
>>>>>> + * Copyright 2026 NXP
>>>>>> + */
>>>>>> +
>>>>>> +#include <dt-bindings/gpio/gpio.h>
>>>>>> +#include "imx93-9x9-qsb-ontat-kd50g21-40nt-a1.dtsi"
>>>>>> +
>>>>>> +&{/} {
>>>>>> +	panel {
>>>>>> +		compatible = "tianma,tm050rdh03";
>>>>>> +		enable-gpios = <&pcal6524 8 GPIO_ACTIVE_HIGH>;
>>>>>> +	};
>>>>>> +};
>>>>>
>>>>> Is it possible to appply this overlay file and kd50g21-40nt-a1 overlay file
>>>>>
>>>>> to imx93-9x9-qsb.dtb, so needn't create dtsi.
>>>>
>>>> I'm sorry, I don't get your question here.
>>>> Anyway, the DT overlays are needed, because the 40-pin EXP/PRI interface on
>>>> the i.MX93 9x9 QSB board can not only connect to a DPI panel adapter board
>>>> but also to an audio hat[2], and maybe more.  The newly introduced .dtsi
>>>> file just aims to avoid duplicated code.
>>>
>>> My means apply two overlay files to dtb
>>>
>>> imx93-9x9-qsb-tianma-tm050rdh03-dtbs += imx93-9x9-qsb.dtb imx93-9x9-qsb-ontat-kd50g21-40nt-a1.dtbo imx93-9x9-qsb-tianma-tm050rdh03.dtbo

This ...

>>>
>>> In imx93-9x9-qsb-tianma-tm050rdh03.dtbo, only include
>>> &{/} {
>>> 	panel {
>>> 		compatible = "tianma,tm050rdh03";
>>> 		enable-gpios = <&pcal6524 8 GPIO_ACTIVE_HIGH>;
>>> 	};
>>> };
>>
>> If an user wants to use imx93-9x9-qsb.dtb and the DT overlay blob
>> imx93-9x9-qsb-tianma-tm050rdh03.dtbo to enable the tianma,tm050rdh03
>> DPI panel, then it won't work unless the user also apply
>> imx93-9x9-qsb-ontat-kd50g21-40nt-a1.dtbo, right?
>>
>>>
> 
> Yes, imx93-9x9-qsb-tianma-tm050rdh03.dtb already created, which already
> applied both overlay file.

.... indicates that imx93-9x9-qsb-tianma-tm050rdh03.dtb is generated by
applying both imx93-9x9-qsb-ontat-kd50g21-40nt-a1.dtbo and
imx93-9x9-qsb-tianma-tm050rdh03.dtbo to imx93-9x9-qsb.dtb.
While, imx93-9x9-qsb-tianma-tm050rdh03.dtbo(a DT overlay blob) just contains
the panel node, which means that an user __cannot_ enable the tianma,tm050rdh03
DPI panel by only applying it to imx93-9x9-qsb.dtb, unless the user also
applies imx93-9x9-qsb-ontat-kd50g21-40nt-a1.dtbo.  That's why the .dtsi
file is needed.

> 
> can the same board be use for imx91 or other evk boards?

Yes, both tianma,tm050rdh03 and ontat,kd50g21-40nt-a1 DPI panels can be
connected to i.MX91/93 11x11 EVK and 9x9 QSB boards.

> 
> Frank
> 
>>> Frank
>>>>
>>>> [2] https://www.nxp.com/design/design-center/development-boards-and-designs/mx93aud-hat-audio-board:MX93AUD-HAT
>>>>
>>>>>
>>>>> Frank
>>>>>>
>>>>>> ---
>>>>>> base-commit: 816f193dd0d95246f208590924dd962b192def78
>>>>>> change-id: 20260407-tianma-tm050rdh03-imx93-9x9-qsb-6e4bbbde3d08
>>>>>>
>>>>>> Best regards,
>>>>>> --
>>>>>> Liu Ying <victor.liu@nxp.com>
>>>>>>
>>>>
>>>> --
>>>> Regards,
>>>> Liu Ying
>>
>> --
>> Regards,
>> Liu Ying

-- 
Regards,
Liu Ying